One of the myriad URL-shortening services out there, found at Tr.im, suffered an outage for some time Wednesday, rendering many links unable to redirect.

The service--which is owned by a start-up called the Nambu Network--believes hackers are to blame. "From this end it appeared we suffered a denial of service attack, and we took appropriate action to get the website back to full service," a Trim representative said to CNET News in an e-mail.

There's another, less likely possible culprit: Airline JetBlue hit one million Twitter followers on Wednesday, and announced a one day-only commemorative deal that would shave 20 percent off the cost of any flights booked through a promotional link. It used Trim as the URL shortener for the link in question, and acknowledged in its "JetBlue Cheeps" Twitter-deals account that heavy volume from the sale may have unexpectedly caused the outage.

But when one crashes, so do all the links associated with it. Or what happens if a URL shortener goes out of business altogether? There would be a whole lot of lost, broken links out there. Some very small URLs could have a very big impact on the organization of the Web.